java - 随机生成算法无法正确生成

Question

我有这段代码可以在我的 Java 游戏中生成一棵“树”；它起作用并产生一棵“树”。我决定制作一个最多 30 的随机数生成器，这将产生那么多“树”。然而，当我运行我的代码时，我没有收到任何错误，但“树”没有生成。生成算法可以在下面找到。

private void generateLevel() {
    int dungeonCoord = dungeonSpawn.nextInt(height * width);
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            tiles[x + y * width] = Tile.GRASS.getId();
            tiles[dungeonCoord] = Tile.TUNNEL.getId();
             while(tCount < tRan)   {
                 System.out.println(tRan);
                 tCount ++;
                 int treeX = treeSpawn.nextInt(width * 5);
                 if(treeX < 256)    {
                     treeX = 256;
                }else   {
                    tiles[treeX] = Tile.LOG.getId();
                    tiles[treeX + width] = Tile.LOG.getId();
                    tiles[treeX + width + width] = Tile.LOG.getId();
                    tiles[treeX - width] = Tile.LEAVES.getId();
                    tiles[treeX - width] = Tile.LEAVES.getId();
                    tiles[treeX - width - width] = Tile.LEAVES.getId();
                    tiles[treeX - width - width + 1] = Tile.LEAVES.getId();
                    tiles[treeX - width - width - 1] = Tile.LEAVES.getId();
                    tiles[treeX - width + 1] = Tile.LEAVES.getId();
                    tiles[treeX - width + 2] = Tile.LEAVES.getId();
                    tiles[treeX - width - 1] = Tile.LEAVES.getId();
                    tiles[treeX - width - 2] = Tile.LEAVES.getId();
                    tiles[treeX + 1] = Tile.LEAVES.getId();
                    tiles[treeX - 1] = Tile.LEAVES.getId();
                    tiles[treeX - width - width - width] = Tile.LEAVES.getId(); 
                }
            }
        }
    }
}

如何声明一切:

private byte[] tiles;
public int width;
public int height;
public boolean generateTree = true;
Random treeSpawn = new Random();
Random dungeonSpawn = new Random();
Random numTrees = new Random();
int tCount = 0;
int tRan = numTrees.nextInt(30);

treeSpawn boolean 值供稍后使用。

Answer 1

这个答案来 self 在评论中可以确定的内容。

代码如下:

if(treeX < 256)    {
    treeX = 256;
} else   {

意味着，如果treeX小于256，您的代码甚至不会尝试绘制树。为了绘制树，您需要删除 else (当您的 if 语句被评估为 true 时，它会被忽略)，以便您的while 循环如下所示:

while(tCount < tRan)   {
    System.out.println(tRan);
    tCount ++;
    int treeX = treeSpawn.nextInt(width * 5);

    if(treeX < 256)    {
        treeX = 256;
    }

    tiles[treeX] = Tile.LOG.getId();
    tiles[treeX + width] = Tile.LOG.getId();
    tiles[treeX + width + width] = Tile.LOG.getId();
    tiles[treeX - width] = Tile.LEAVES.getId();
    ... // Rest of the tree drawing code
}